
/* Derived from the LibTomCrypt library (authored by Tom St Denis)  */

#include <stdio.h>
#include <memory.h>

#include "ltc_eax.h"

#define MAXBLOCKSIZE  128

static const struct
{
    int keylen, noncelen, headerlen, msglen;

    unsigned char key[MAXBLOCKSIZE], nonce[MAXBLOCKSIZE], header[MAXBLOCKSIZE], plaintext[
        MAXBLOCKSIZE], ciphertext[MAXBLOCKSIZE], tag[MAXBLOCKSIZE];
}

tests[] =
{
    /* NULL message */
    {
        16, 0, 0, 0,

        /* key */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* nonce */
        {
            0
        },

        /* header */
        {
            0
        },

        /* plaintext */
        {
            0
        },

        /* ciphertext */
        {
            0
        },

        /* tag */
        {
            0x9a, 0xd0, 0x7e, 0x7d, 0xbf, 0xf3, 0x01, 0xf5,
            0x05, 0xde, 0x59, 0x6b, 0x96, 0x15, 0xdf, 0xff
        }
    },

    /* test with nonce */
    {
        16, 16, 0, 0,

        /* key */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* nonce */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* header */
        {
            0
        },

        /* plaintext */
        {
            0
        },

        /* ciphertext */
        {
            0
        },

        /* tag */
        {
            0x1c, 0xe1, 0x0d, 0x3e, 0xff, 0xd4, 0xca, 0xdb,
            0xe2, 0xe4, 0x4b, 0x58, 0xd6, 0x0a, 0xb9, 0xec
        }
    },

    /* test with header [no nonce]  */
    {
        16, 0, 16, 0,

        /* key */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* nonce */
        {
            0
        },

        /* header */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* plaintext */
        {
            0
        },

        /* ciphertext */
        {
            0
        },

        /* tag */
        {
            0x3a, 0x69, 0x8f, 0x7a, 0x27, 0x0e, 0x51, 0xb0,
            0xf6, 0x5b, 0x3d, 0x3e, 0x47, 0x19, 0x3c, 0xff
        }
    },

    /* test with header + nonce + plaintext */
    {
        16, 16, 16, 32,

        /* key */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* nonce */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* header */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* plaintext */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
        },

        /* ciphertext */
        {
            0x29, 0xd8, 0x78, 0xd1, 0xa3, 0xbe, 0x85, 0x7b,
            0x6f, 0xb8, 0xc8, 0xea, 0x59, 0x50, 0xa7, 0x78,
            0x33, 0x1f, 0xbf, 0x2c, 0xcf, 0x33, 0x98, 0x6f,
            0x35, 0xe8, 0xcf, 0x12, 0x1d, 0xcb, 0x30, 0xbc
        },

        /* tag */
        {
            0x4f, 0xbe, 0x03, 0x38, 0xbe, 0x1c, 0x8c, 0x7e,
            0x1d, 0x7a, 0xe7, 0xe4, 0x5b, 0x92, 0xc5, 0x87
        }
    },

    /* test with header + nonce + plaintext [not even sizes!] */
    {
        16, 15, 14, 29,

        /* key */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
        },

        /* nonce */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e
        },

        /* header */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d
        },

        /* plaintext */
        {
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c
        },

        /* ciphertext */
        {
            0xdd, 0x25, 0xc7, 0x54, 0xc5, 0xb1, 0x7c, 0x59,
            0x28, 0xb6, 0x9b, 0x73, 0x15, 0x5f, 0x7b, 0xb8,
            0x88, 0x8f, 0xaf, 0x37, 0x09, 0x1a, 0xd9, 0x2c,
            0x8a, 0x24, 0xdb, 0x86, 0x8b
        },

        /* tag */
        {
            0x0d, 0x1a, 0x14, 0xe5, 0x22, 0x24, 0xff, 0xd2,
            0x3a, 0x05, 0xfa, 0x02, 0xcd, 0xef, 0x52, 0xda
        }
    },

    /* Vectors from Brian Gladman */
    {
        16, 16, 8, 0,

        /* key */
        {
            0x23, 0x39, 0x52, 0xde, 0xe4, 0xd5, 0xed, 0x5f,
            0x9b, 0x9c, 0x6d, 0x6f, 0xf8, 0x0f, 0xf4, 0x78
        },

        /* nonce */
        {
            0x62, 0xec, 0x67, 0xf9, 0xc3, 0xa4, 0xa4, 0x07,
            0xfc, 0xb2, 0xa8, 0xc4, 0x90, 0x31, 0xa8, 0xb3
        },

        /* header */
        {
            0x6b, 0xfb, 0x91, 0x4f, 0xd0, 0x7e, 0xae, 0x6b
        },

        /* PT */
        {
            0x00
        },

        /* CT */
        {
            0x00
        },

        /* tag */
        {
            0xe0, 0x37, 0x83, 0x0e, 0x83, 0x89, 0xf2, 0x7b,
            0x02, 0x5a, 0x2d, 0x65, 0x27, 0xe7, 0x9d, 0x01
        }
    },

    {
        16, 16, 8, 2,

        /* key */
        {
            0x91, 0x94, 0x5d, 0x3f, 0x4d, 0xcb, 0xee, 0x0b,
            0xf4, 0x5e, 0xf5, 0x22, 0x55, 0xf0, 0x95, 0xa4
        },

        /* nonce */
        {
            0xbe, 0xca, 0xf0, 0x43, 0xb0, 0xa2, 0x3d, 0x84,
            0x31, 0x94, 0xba, 0x97, 0x2c, 0x66, 0xde, 0xbd
        },

        /* header */
        {
            0xfa, 0x3b, 0xfd, 0x48, 0x06, 0xeb, 0x53, 0xfa
        },

        /* PT */
        {
            0xf7, 0xfb
        },

        /* CT */
        {
            0x19, 0xdd
        },

        /* tag */
        {
            0x5c, 0x4c, 0x93, 0x31, 0x04, 0x9d, 0x0b, 0xda,
            0xb0, 0x27, 0x74, 0x08, 0xf6, 0x79, 0x67, 0xe5
        }
    },

    {
        16, 16, 8, 5,

        /* key */
        {
            0x01, 0xf7, 0x4a, 0xd6, 0x40, 0x77, 0xf2, 0xe7,
            0x04, 0xc0, 0xf6, 0x0a, 0xda, 0x3d, 0xd5, 0x23
        },

        /* nonce */
        {
            0x70, 0xc3, 0xdb, 0x4f, 0x0d, 0x26, 0x36, 0x84,
            0x00, 0xa1, 0x0e, 0xd0, 0x5d, 0x2b, 0xff, 0x5e
        },

        /* header */
        {
            0x23, 0x4a, 0x34, 0x63, 0xc1, 0x26, 0x4a, 0xc6
        },

        /* PT */
        {
            0x1a, 0x47, 0xcb, 0x49, 0x33
        },

        /* CT */
        {
            0xd8, 0x51, 0xd5, 0xba, 0xe0
        },

        /* Tag */
        {
            0x3a, 0x59, 0xf2, 0x38, 0xa2, 0x3e, 0x39, 0x19,
            0x9d, 0xc9, 0x26, 0x66, 0x26, 0xc4, 0x0f, 0x80
        }
    }

};

int eax_test( void )
{
    int err, x, stat;
    unsigned char outct[MAXBLOCKSIZE], outtag[MAXBLOCKSIZE];

    for( x = 0; x < (int)(sizeof(tests) / sizeof(tests[0])); x++ )
    {
        if( (err = eax_memory(tests[x].key, tests[x].keylen, tests[x].nonce, tests[x].noncelen, 
            tests[x].header, tests[x].headerlen, tests[x].plaintext, tests[x].msglen, outct, 
            outtag, AES_BLOCK_SIZE, 0, 0)) != 0 )
            return err;

        if( memcmp(outct, tests[x].ciphertext, tests[x].msglen) || memcmp(outtag, tests[x].tag, AES_BLOCK_SIZE) )
        {
#if 1
            unsigned long y;
            printf( "\n\nFailure: \nCT:\n" );
            for( y = 0; y < (unsigned long)tests[x].msglen; )
            {
                printf( "0x%02x", outct[y] );
                if( y < (unsigned long)(tests[x].msglen - 1) )
                    printf( ", " );
                if( !(++y % 8) )
                    printf( "\n" );
            }

            printf( "\nTAG:\n" );
            for( y = 0; y < AES_BLOCK_SIZE; )
            {
                printf( "0x%02x", outtag[y] );
                if( y < AES_BLOCK_SIZE - 1 )
                    printf( ", " );
                if( !(++y % 8) )
                    printf( "\n" );
            }
#endif
        }

        if( (err = eax_memory(tests[x].key, tests[x].keylen, tests[x].nonce, tests[x].noncelen, 
            tests[x].header, tests[x].headerlen, outct, tests[x].msglen, outct,
            outtag, AES_BLOCK_SIZE, 1, &stat)) != 0 )
            return err;

        if( (stat != EXIT_SUCCESS) || memcmp(outct, tests[x].plaintext, tests[x].msglen) )
        {
#if 1
            unsigned long y;
            printf( "\n\nFailure (stat == %d): \nPT:\n", stat );
            for( y = 0; y < (unsigned long)tests[x].msglen; )
            {
                printf( "0x%02x", outct[y] );
                if( y < (unsigned long)(tests[x].msglen - 1) )
                    printf( ", " );
                if( !(++y % 8) )
                    printf( "\n" );
            }

            printf( "\n\n" );
#endif
            return -1;
        }
    }

    return 0;
}

int main(void)
{
    eax_test();
    return 0;
}
